Photo of Dr. Ziv E. Cohen

Dr. Ziv E. Cohen, M.D.

Psychiatry physician, Greenwich, CT

Principium Psychiatry

Dr. Ziv Cohen is a board certified psychiatrist and the founder and medical director of Principium Psychiatry.

4 Dearfield Dr, #203, Greenwich, CT 06831
At a glance
Board certification
Psychiatry and forensic psychiatry
Role
Founder and Medical Director
Practice focus
Treatment-resistant conditions

Facts on this page last checked October 2026. How we check doctors

About Dr. Cohen

Dr. Cohen is the founder and medical director of Principium Psychiatry. He is a board certified psychiatrist and a board certified forensic psychiatrist. Principium Psychiatry is physician-led and focuses on treatment-resistant conditions, with interventional options.

At Weill Cornell Medical College he is a clinical associate professor. He serves on the faculty boards of both Cornell and Columbia. Business Insider featured him in an article.

Membership and fees

Principium Psychiatry primarily operates as an out-of-network provider.

Licenses and credentials

Board certification
Psychiatry and forensic psychiatry

Hospital and practice affiliations

Founder and Medical Director, Principium Psychiatry
Clinical associate professor, Weill Cornell Medical College
Faculty boards of Cornell and Columbia

Location

4 Dearfield Dr, #203, Greenwich, CT 06831
Principium Psychiatry practice page
Directions

Recognition and research

Media and books

Featured in a Business Insider article
Featured in an interview discussing anxiety

Patient reviews

Be the first to review Dr. Cohen.
Write a review

Questions patients ask

Is Dr. Cohen board certified?

Dr. Cohen is a board certified psychiatrist. He is also a board certified forensic psychiatrist.

Does Dr. Cohen teach at a medical school?

He is a clinical associate professor at Weill Cornell Medical College. He also serves on the faculty boards of both Cornell and Columbia.

What is Principium Psychiatry?

Principium Psychiatry is physician-led and focuses on treatment-resistant conditions, with interventional options. Dr. Cohen is its founder and medical director.

Are you Dr. Cohen? Claim this profile for free. Report a correction.

Ready to contact Principium Psychiatry?